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Old 01-26-2016, 10:38 AM   #11
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Well doing some exploration I took the access panel off the lower front of the shower and looked in the area under the shower floor.. I can see the duct work to the hall vent and the bathroom.. That part all looks intact but I can see the feed line go down thru the floor. So next I went down under the MH and see a insulated hose go into a box between the frame heading towards the back heater.. After that I have lost it
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Old 01-28-2016, 09:07 AM   #12
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Well doing some exploration I took the access panel off the lower front of the shower and looked in the area under the shower floor.. I can see the duct work to the hall vent and the bathroom.. That part all looks intact but I can see the feed line go down thru the floor. So next I went down under the MH and see a insulated hose go into a box between the frame heading towards the back heater.. After that I have lost it
If it's the hose I think you're talking about it goes into the water tank compartment behind the drop down door (with the two pumps and two portholes in the plastic cover behind the door). In my 364, the pipe runs through the water tank compartment with a "T" in the line that is open into the compartment. The rest of the hose seems to go up into the floor to feed the hallway/bathroom vents. I tried to plug the T and got most of the air diverted into the hallway. Still don't have any noticeable flow into the bathroom.

There is quite a bit of hose looping around under the shower though, so I wonder if that hose has a kink in it or something.
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Old 02-10-2016, 05:24 PM   #13
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Just got a call from the dealer. They pulled about six extra feet of hose out from under the shower and cut it to reach the vent. They said that it still didn't provide much air into the bathroom vent, and it might be a design issue. Hopefully the factory will have some ideas.
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Old 02-10-2016, 08:53 PM   #14
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The issue is the big hose to the basement. You need to restrict flow there without endangering the water tanks in cool weather.

I plan to put new registers with flow restrictors on all the vents so i can at least balance the air. The rear bathroom is ridiculously hot.
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Old 02-11-2016, 12:47 AM   #15
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I tried a simpler way to restrict air flow to the front two registers--pulled off the grill and used duct tape to cover the top half of the registers from the inside. It helped a little. By my count, there are five outlets from the front furnace--two in the kitchen cabinet, one in the hallway outside the front bathroom, one on the inside of the front bathroom and one in the water tank compartment. There are two outlets from the rear furnace--one in the bathroom and one in the bedroom next to the right side of the closet (this outlet gets covered-up when the bunk slider is closed.

From what I can tell the two furnaces do not share their duct work. Seems like quite a waste for the rear furnace to only feed two registers.
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Old 02-11-2016, 06:02 AM   #16
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I believe the rear furnace is smaller than the front one.

The problem with the front is that if you don't restrict the water tank you are just pushing more air down there when you restrict the others.

To properly balance output every output needs to be able to be restricted.
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Old 02-11-2016, 07:29 AM   #17
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The Front furnace is a 30K BTU's and the rear is a 20K BTU's so it is a bit smaller. the configuration is similar to the furnace setups in the Dual furnace XL's where the rear furnace only supplies a couple of rooms (Bath and Main Bedroom).
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Old 02-11-2016, 08:24 AM   #18
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I believe the rear furnace is smaller than the front one.

The problem with the front is that if you don't restrict the water tank you are just pushing more air down there when you restrict the others.

To properly balance output every output needs to be able to be restricted.
Yep--did my best to restrict the vent in the water compartment. Not sure if it was enough. I asked the dealer to look into it to see if they could do a better job.
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Old 02-11-2016, 12:07 PM   #19
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well I can say that in November with no heat to the mid bathroom we went to Wal-mart to buy a very small space heater cause it was really cold.. We would de-winterize right now and head out if the heater worked for that bathroom and hall.. I guess we will just wait till the 25th of March for our appointment with the dealer..
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Old 02-11-2016, 02:48 PM   #20
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Does anyone know the hose routing for the bathroom.. It looks like it goes under the frig and down where the water tank lives and under the shower it goes down thru the floor after Y to bathroom vent and hall vent
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